Part Information Review and Update

Thought for 4 mins 24 sec

I reviewed the part project for FH12S-40S-0.5SH(55) against the current project metadata, schematic terminals, PCB footprint data, and the official Hirose material.

What I found Project metadata

The current project already has these key properties set:

Manufacturer Name = Hirose
Manufacturer Part Number = FH12S-40S-0.5SH(55)
Part Type = Connectors
Designator Prefix = J
Mount = Socket
Datasheet URL is already populated, so I did not update it. The datasheet-sync workflow says to only search/update when that property is missing

Official datasheet / product info

The official Hirose product page confirms:

Exact MPN: FH12S-40S-0.5SH(55)
Series: FH12
40 contacts
0.5 mm pitch
Bottom-contact
SMT horizontal mounting
Strengthened flip-lock actuator
Plating code (55) = gold plated
Lifecycle: Not recommended for new design

From the series datasheet, the key specs for this variant are:

Current rating: 0.5 A/contact
Voltage rating: 50 V AC
Operating temperature: -40 to +85 C
Contact resistance: 50 mOhm max
Insulation resistance: 500 MOhm min at 100 V DC
Withstanding voltage: 150 V AC for 1 minute
Durability: 20 cycles
Applicable FFC/FPC thickness: 0.3 +/- 0.05 mm

Symbol / pin audit

The schematic contains exactly 40 terminal components, with pin numbers 1 through 40, which matches the datasheet requirement to match pin count exactly

Good

Pin count matches the datasheet: 40 terminals present
Terminal numbering appears complete: 1-40
No missing or extra signal contacts were found in the symbol

Mismatches / gaps

Every terminal currently has Pin Type = Unspecified
I did not find Pin Description properties on the terminals
I also did not see additional symbol-organization metadata like Section, Pin Group, or Pin Orientation

For a connector, leaving pin type unspecified is not catastrophic, but it is still incomplete metadata. The datasheet-sync guidance explicitly treats missing pin properties as something to flag/fix when verifying a part project

Footprint audit

The PCB layout shows:

40 numbered signal pads
2 additional mounting/mechanical pads
A footprint asset named HIROSE_FH12S-40S-0.5SH_55_.kicad_mod
A 3D model asset FH12S-40S-0.5SH_55_.stp

That is a good sign: the footprint asset naming matches the exact MPN, and the presence of 40 signal pads + 2 mount pads is consistent with this style of FFC connector rather than indicating an error. The symbol should represent the 40 electrical contacts, while the footprint can legitimately include extra mechanical hold-down pads. The datasheet-sync rules also distinguish electrical pins from other package/mechanical features when auditing part completeness

Good

Footprint appears to match the exact part variant by filename
Signal pad count matches the datasheet contact count
Extra mounting pads appear mechanically reasonable, not suspicious

Remaining limitation

I could verify the count and structure of the footprint, but not fully prove every land dimension/spacing numerically against the Hirose drawing from the indexed project data alone.

Main mismatches to flag Metadata gaps

Table

Area	Status	Notes
MPN	Good	Matches official Hirose MPN
Manufacturer	Good	Matches Hirose
Part Type	Good	Connector is appropriate
Datasheet URL	Present	Already set, so no update needed
Package / Case code	Missing	No explicit package/case property found
Electrical properties	Missing	Current, voltage, temp not captured as project properties

Symbol gaps

Table

Area	Status	Notes
Pin count	Good	40/40 present
Pin numbering	Good	1-40 present
Pin type	Mismatch / incomplete	All terminals are `Unspecified`
Pin descriptions	Missing	No per-pin descriptions found
Symbol organization fields	Missing	No section/group/orientation metadata found

Footprint gaps

Table

Area	Status	Notes
Contact count	Good	40 signal pads present
Mechanical pads	Good	2 mounting pads present
Exact geometry vs drawing	Not fully verified	Needs a dimension-by-dimension check if you want full closure

Bottom line

No datasheet URL update was needed because the property already exists.
The part identity looks mostly correct: MPN, manufacturer, connector type, and 40-contact count all align with the official Hirose information.
The biggest issues are completeness, not obvious wrong data:
- missing Package or Case Code
- missing electrical/spec properties
- all symbol terminals have Unspecified pin type
- missing Pin Description fields
The footprint looks structurally plausible and likely correct at a high level, including 40 signal pads plus 2 mechanical pads.

If you want, I can do the next step and normalize the part metadata plus fill in the terminal properties for all 40 contacts.

Fill terminal metadata

Verify footprint dimensions

Add electrical specs

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